package thread;

public class SyncDemo6 {
    public static void main(String[] args) {
            Foo foo =new Foo();
        Thread t1 = new Thread(foo::methodA);
        Thread t2 = new Thread(foo::methodB);
        t1.start();
        t2.start();
    }
}
class Foo {
    public synchronized void methodA() {
        Thread t = Thread.currentThread();
        System.out.println(t.getName() + ":正在执行A方法");
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println(t.getName() + ":执行A完毕");
    }

    public void methodB() {
        synchronized (this) {
            Thread t = Thread.currentThread();
            System.out.println(t.getName() + ":正在执行A方法");
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(t.getName() + ":执行A完毕");
        }
    }
}